The average cashier salary at Harris County was $38,051 , which is 20 percent higher than the average salary for this job in Texas, but 15 percent lower than the national average for this job . Cashier salaries at Harris County typically range from $36,820 to $39,282 (25th to 75th percentile). The highest reported cashier salary was $39,282. There are 2 employees at Harris County with the job title cashier.